Annular rotating disks optimal with respect to mixed creep rupture

• Autorzy: Ustrzycka A. , Szuwalski K.

Identyfikatory

DOI

10.15632/jtam-pl.56.1.57

• Języki publikacji: EN

Abstrakty

EN

Optimal shapes in the class of polynomial functions for rotating annular disks with respect to the mixed creep rupture time are found. Two effects leading to damage: diminishing of transversal dimensions and growth of micro-cracks are simultaneously taken into account. The first of them requires the finite strain analysis, the latter is described by Kachanov’s evolution equation. Behaviour of the material is described by nonlinear Norton’s law, generalized for true stresses and logarithmic strains, and the shape change law in form of similarity of true stresses and logarithmic strains deviators. For optimal shapes of the disk, changes of geometry and a continuity function are presented. The theoretical considerations based on the perception of the structural components as some highlighted objects with defined properties is presented.

Słowa kluczowe

EN

annular disk; mixed creep rupture; optimal design

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 1
• Strony: 57--69
• Opis fizyczny: Bibliogr. 23 poz., rys.

Twórcy

autor

Ustrzycka A.

• Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw, Poland

autor

Szuwalski K.

• Cracow University of Technology, Faculty of Mechanical Engineering, Institute of Applied Mechanics, Cracow, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).